Патент USA US2116704код для вставки
May 10, 1938. G. LAUBE ET AL . LENS 2,116,704 MOUNT Filed sept. 2e, 193e __. Fig. 7. f I INVENTORS 44 Fig. 5. Fig. 6. Grover Laube BY Charles M. Miller y# ¿03W ATTORNEY Patented May 10, 1938 2,116,704 UNITED STATI-:s PATENT -ol-‘Flclz 2,116,704 « LENS MOUNT Grover Laube and charles Melvin’MillerQLos Angeles, Calif., assignors to Twentieth Cen tury-Fox Film Corporation, Los Angeles, Calif., a corporation of New York - IApplication September 26,1936, Serial No. 102,715 u 7 Claims. (ci. sii-_24) The ring I5 is held in place by another ring Il 'I'his invention relates to lens mounts and deals with a mount for objective lenses wherein screw threadedly mounted thereon by screw threads I9 and carries internal threads 20 adapt -ed to receive the conventional screw threaded The principal object of this invention is to end of the lens L. In cases where adjustment is CFI provide a lens mount having means for focusing needed for initial mounting of the lens L, a. shim an objective lens, wherein the objective is moved of the required thickness may be used between on its principal axis in a rectilinear non-rotating the shoulders I6 and I'II 'I'he means for moving the lens carrying sleeve movement. I2 and focusing the lens L is designated A in its Another object is to provide a lens mount hav ‘novel means is incorporated for focusing the lens. ing anti-friction bearings for . supporting the . entirety. As before stated, it is one of the objects of this invention to provide means for this pur pose that moves the lens in a non-rotating recti linear movement. As shown, this consists of a bracket 22 mounted on the sleeve II by screws 23 and 24. The bracket 22 is formed with a hub 25 adapted to receive a rotatable shaft 26. On the inner end of the shaft 26 we provide an annu lar shoulder 21 that is arranged to bear against movement of the lens. A further object is to provide a novel means for moving ' the objective. Still another object is to provide a lens mount wherein the over-al1 movement of the'operating means for focusing may be standardized for lenses of different focal lengths. Aistill further object is to provide a lens mount 20 a recess c_ut in the bracket 22. characterized by precision and durability. -The inner face 20 of the shaft 26 carries an eccentric pin 28. On the pin 26 we pivotally mounta block 29. For And another object is to provide a lens mount of the character described thatlends itself read ily to ease and economy in manufacturing. Otherl objects and advantages will appear as the description proceeds in conjunction with the 2 GI drawing in which: purposes of assembling this arrangement, the supporting sleeve I I is formed with an opening 30 large enough to receive the inner end of the . shaft 26 and pass the pin 28 and the block 29. 25 When assembled, the block 29 fits into a circum- _ ‘ Figure 1 is a view of our mount construction shown partly in elevation and partly in section. `ferential slot 3| in the sleeve I2. By referring Figure 2 is a side elevation of the mount taken to Figure 3, it can be seen that rotation of the shaft 26 will force the sleeve I2 >to travel longi 30 in the direction of the arrow in Figure 1. Figure 3 is a View similar to Figure 2 with the tudinally in the sleeve Il. The means for turn operating knob removed and is taken on line ing the shaft 26 comprises a knob 32 attached to the shaft by a screw 33. Any suitable means for 3-3 of AFigure 4. _ preventing slippage of the knob on the shaft may Figure 4 is a cross section taken on line 4--4 of Figure 2. ' 1 Figure 5 is a cross sectional view showing the arrangement of the anti-friction bearing for sup porting the objective lens. Figure 6 is a longitudinal section of the same, 40 and Figure 7 is a crossrsectional> view showing an'other form of the anti-friction bearing.V Referring to the drawing and particularly to Figure 1, it will be observed that lour invention comprises a supporting sleeve II, having an ob jective carrying sleeve I2 movably mounted therein. The supporting sleeve II is adapted to be `mounted on a conventional motion picture camera, not shown, and for this purpose is pro 50 vided with a turnable ring I3 arranged to detach-. ably engage a member I4 mounted on the camera. This will be recognized as the common means of mounting a lens on a camera and will not be - further described. The objective carrying sleeve I2 is equipped for carrying a lens L in a manner> to allow initial setting of the lens for the focal starting point and as shown, comprises -an annu lar ring V60 I5 having an outwardly extending shoulder 4IIì arranged to engage an inwardly ex tending shoulder I1 on the Supporting sleeve I2. ’ be provided, in this instance we have shown the _u Si outer end of the shaft 26 turned down and ñat- ' ted on two sides as illustrated and designated 34 in Figure 2. The knob 32 carries a pointer 35 ` ' ' vwhich may ybe read against the calibrations 36 for indicating the field distances. Means is pro vided for slight variation in the setting of the pointer to allow‘for adjustment of the pointer to the- initial calibration. This feature has been incorporated in the means for attaching the pointer to the knob and is best illustrated in Fig ure 4. Here it canbe seen that the pointer 35 is held against the under side of the knob 32 by a ring 3l which in turn is clamped against the pointer body by screws 38. . It is to be under stood that the pointer 35 is held between the ring â 31 and the knob 32 by friction only 4and that where the screws 38 pass through the body of the pointer, the holes are elongated as shown and designated 39 in Figure 2. This arrangement allows slight rotation of the pointer with respect to the knob by loosening the screws 38 and per mits the pointer to be- adjusted to the knob for the initial setting of the lens with respect tothe cali brations.- > Another feature of this invention resides in the 60 2 2,116,704 anti-friction bearing for the lens carrying sleeve tudinally with respect to said supporting sleeve, to in the supporting sleeve. In Figures l, 5, and 6 we have illustrated this type of bearing. Refer ring to Figure 1 in the broken away portion, the rotation of said sleeves. lens carrying sleeve I2 is supported in the support ing sleeve I I by means of balls 4I] and 4I riding in slots or grooves 42 and 43 respectively in the sleeve I2. `It is obvious that the grooves may be formed 40 45 ' ` lens. - 3. A lens mount comprising: a supporting sleeve; a lens carrying sleeve having a circum By making these balls and grooves a nice fit, the lens carrying sleeve may be precisely mounted in the supporting sleeve and moved with a minimum ferential slot therein mounted in said supporting sleeve for longitudinal movement; a block slidably of friction. supporting sleeve; a shaft rotatably mounted in said bracket; an eccentric on said shaft pivotally connected to said block; means for turning said shaft to move said lens carrying sleeve longitudi In practice, we use three or more of mounted in said slot; a bracket mounted on said larged views of the ball bearing arrangements and nally with respect to said supporting sleeve to may be considered as an enlarged view of the ball 40. In order to prevent binding or excessive fric focus said lens; means for preventing relative ro tation of said sleeves; a pointer associated with tion at the end vof the run of the ball, We recom mend a post 44 be installed as shown in Figures 5 and 6. This type of bearing will not prevent ro the means for turning the shaft for indicating the - focus of the lens, and means for adjusting the pointer relative to the turning means for the tation of the sleeve I2 in the sleeve II, 1conse initial focus of the lens. quently we provide a key 45 ñxed to the sleeve I2 4. A lens mount comprising: a supporting by a screw 46 or in any other suitable manner and sleeve; a lens carrying sleeve having a circum slot the sleeve I I as shown at 4l to receive the key. . ferential slot in the wall thereof slidably mounted The key and slot may be reversed in the sleeves if within said supporting sleeve; means for holding found to be desirable. With this arrangement, said sleeves against relative rotation; a block the sleeve I2 may be moved longitudinally in the mounted in said slot and adapted to be recipro sleeve II with nice precision and a minimum of cated therein ;" a. turnable member mounted upon 30 said supporting sleeve, and means for pivotally The aperture control means comprises a sleeve connecting said block to an eccentric position on >50 rotatably mounted in the sleeve I2. The inner said turnable member. end of the sleeve 50 carries a tongue 5I adapted 5. A lens mount comprising: a supporting to engage a slot on the periphery of the lens shell. sleeve;' a lens carrying sleeve telescopically mount It is to be understood that the sleeve 50 travels ed within said supporting sleeve, said lens carry with the sleeve I2 and is rotatably held in the ing sleeve having a straight sided vertical slot in « sleeve I2 by means of a screw 52 screw threadedly the Wall thereof; means for preventing relative mounted in the sleeve I2 and having a tongue 53 rotation of said sleeves; a block mounted in said extending into a groove 54 in the sleeve 50. An slot and adapted to be vertically reciprocated opening 52’ is provided in the sleeve I I for insert therein; a rotatable member mounted upon said ing the screw 52. The outer end of the sleeve 50 supporting sleeve, and a pin pivotally connecting is bell shaped for purposes of admitting light. said block to an eccentric position upon said ro The indicia 55 for indicating the aperture is car' tatable member. ried on a flange 56 that extends inwardly over the 6. A lens mount comprising: a supporting Y. outer periphery of the sleeve II and may be read sleeve; a lens carrying sleeve slidably mounted friction. Li ' 2. The elements of claim l and in addition thereto, a pointer associated with said means for turning the shaft for indicating the focus of said in either sleeve if more convenient or desirable. these ball arrangements at each end of the sleeve, circumferentially spaced around the sleeve I2 as shown in Figure 4. Figures 5 and 6 show en ‘ focus said lens and means for preventing relative » . against a mark 5l on the sleeve I I. In Figure 7 we have shown another form of within said supporting sleeve, said lens carrying ball bearing for mounting the lens carrying sleeve substantially transversely to the longitudinal axis of said sleeve; a block slidably mounted within said slot for reciprocal movement therein; a vmem ber rotatably mounted upon said supporting sleeve, said member having its axis of rotation substantially perpendicular to the longitudinal in the supporting sleeve. In this form we incor porate the means for holding the travelling sleeve against rotation with respect to the supporting sleeve as well as providing an anti-friction bear ing for the sleeve. The bearing comprises a ball 60 which works in longitudinal slots 6I and 62 in the supporting sleeve II and the lens carrying sleeve I2 respectively. A bearing of this nature will hold the two sleeves against relative rotation and will at the same time furnish an anti-friction support for one sleeve within the other. Our in vention includes a bearing of this type. Having set forth the objects and advantages of our invention together with a description of the same, what we claim is: l. A lens mount comprising: a supporting sleeve; a lens carrying sleeve having a circum ferential slot therein mounted in said supporting sleeve for longitudinal movement; a block slidably mounted in said slot; a bracket mounted on said supporting sleeve; a shaft rotatably mounted in said bracket; an eccentric on saidshaft pivotally connected to said block; means for turning said shaft to move said lens carrying sleeve longi sleeve having a slot in the wall thereof extending Si) axis of said sleeve, and means for pivotally con- . necting an eccentric position on said member to said block. . '7. A lens mount comprising: , a supporting sleeve adapted to be mounted upon a camera or the like; a lens carrying sleeve having a circum (il) ferential slot therein slidably mounted within. said supporting sleeve; means for confining the movement of the said lens carrying sleeve to a longitudinal movement within said supporting sleeve; a turnable member mounted upon said supporting sleeve and extending through saidsleeve for operative connection with said lens carrying sleeve; a block slidably mounted within said slot for reciprocal movement, and a pin piv otally connecting said block to an eccentric posi tion upon said turnable member. ' GROVER LAUBE. CHARLES MELVIN MILLER.